/***************************************************************************
 *   Copyright (c) 2015 Alexander Golubev (Fat-Zer) <fatzer2@gmail.com>    *
 *                                                                         *
 *   This file is part of the FreeCAD CAx development system.              *
 *                                                                         *
 *   This library is free software; you can redistribute it and/or         *
 *   modify it under the terms of the GNU Library General Public           *
 *   License as published by the Free Software Foundation; either          *
 *   version 2 of the License, or (at your option) any later version.      *
 *                                                                         *
 *   This library  is distributed in the hope that it will be useful,      *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU Library General Public License for more details.                  *
 *                                                                         *
 *   You should have received a copy of the GNU Library General Public     *
 *   License along with this library; see the file COPYING.LIB. If not,    *
 *   write to the Free Software Foundation, Inc., 59 Temple Place,         *
 *   Suite 330, Boston, MA  02111-1307, USA                                *
 *                                                                         *
 ***************************************************************************/

#include "pch.h"

#include <App/Document.h>

#include "ViewProviderOriginFeature.h"
#include "SoFCSelection.h"
#include "ViewProviderOrigin.h"
#include "App/DocumentObject.h"

using namespace Gui;

TYPESYSTEM_SOURCE(Gui::ViewProviderOriginFeature, Gui::ViewProviderGeometryObject)

ViewProviderOriginFeature::ViewProviderOriginFeature() {
    // Create node for scaling the origin
    pScale = new SoScale();
    pScale->ref();

    // Create the separator filled by inherited classes
    pOriginFeatureRoot = new SoSeparator();
    pOriginFeatureRoot->ref();

    // Create the Label node
    pLabel = new SoAsciiText();
    pLabel->ref();
    pLabel->width.setValue(-1);
}


ViewProviderOriginFeature::~ViewProviderOriginFeature() {
    pScale->unref();
    pOriginFeatureRoot->unref();
    pLabel->unref();
}


void ViewProviderOriginFeature::attach(App::DocumentObject* pcObject) {
    ViewProviderGeometryObject::attach(pcObject);

    float defaultSz = ViewProviderOrigin::defaultSize();
    float sz = Size / defaultSz;

    // Create an external separator
    SoSeparator* sep = new SoSeparator();

    // Add material from the base class
    sep->addChild(pcShapeMaterial);

    // Bind same material to all part
    SoMaterialBinding* matBinding = new SoMaterialBinding;
    matBinding->value = SoMaterialBinding::OVERALL;
    sep->addChild(matBinding);

    // Scale feature to the given size
    pScale->scaleFactor = SbVec3f(sz, sz, sz);
    sep->addChild(pScale);

    // Setup font size
    SoFont* font = new SoFont();
    font->size.setValue(defaultSz / 10.);
    sep->addChild(font);

    // Create the selection node
    SoFCSelection* highlight = new SoFCSelection();
    highlight->applySettings();
    if (!Selectable) {
        highlight->selectionMode = Gui::SoFCSelection::SEL_OFF;
    }
    highlight->objectName = getObject()->getNameInDocument();
    highlight->documentName = getObject()->getDocument()->getName();
    highlight->style = SoFCSelection::EMISSIVE_DIFFUSE;

    // Style for normal (visible) lines
    SoDrawStyle* style = new SoDrawStyle();
    style->lineWidth = 2.0f;
    highlight->addChild(style);

    // Visible lines
    highlight->addChild(pOriginFeatureRoot);

    // Hidden features
    SoAnnotation* hidden = new SoAnnotation();

    // Style for hidden lines
    style = new SoDrawStyle();
    style->lineWidth = 2.0f;
    style->linePattern.setValue(0xF000); // (dash-skip-skip-skip)
    hidden->addChild(style);

    // Hidden lines
    hidden->addChild(pOriginFeatureRoot);

    highlight->addChild(hidden);

    sep->addChild(highlight);

    // Setup the object label as it's text
    pLabel->string.setValue(SbString(pcObject->Label.getValue()));

    addDisplayMaskMode(sep, "Base");
}

std::vector<std::string> ViewProviderOriginFeature::getDisplayModes() const {
    // add modes
    std::vector<std::string> StrList;
    StrList.push_back("Base");
    return StrList;
}

void ViewProviderOriginFeature::setDisplayMode(const char* ModeName) {
    if (strcmp(ModeName, "Base") == 0)
        setDisplayMaskMode("Base");
    ViewProviderGeometryObject::setDisplayMode(ModeName);
}

bool ViewProviderOriginFeature::onDelete(const std::vector<std::string>&) {
    // Forbid deletion if there is an origin this feature belongs to
    return 0;
}
